When I was forced to snow leopard by a HD replacement I had a "-193" problem - go to: http://forums.applecentral.com/ubbthread...o_th#Post512777

This got me out of trouble.

It's located: AppleCentral Forums Now Software Support Now Up-to-Date & Contact
Community Help I fixed error -193 thanks to this post

Keep us posted with how you went as I am still running NUTD Server v5.3.0 on OS 10.4.11 - if it works don't touch it!
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Simon
http://www.bramshaw.com.au
Melbourne - Australia GMT +1100